1452603 – can't bootup from image when attached multi-virtio-scsi disks with multi-luns

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Bug 1452603 - can't bootup from image when attached multi-virtio-scsi disks with multi-luns

Summary: can't bootup from image when attached multi-virtio-scsi disks with multi-luns

Keywords:
Status:	CLOSED ERRATA
Alias:	None
Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	seabios
Sub Component:
Version:	7.4
Hardware:	Unspecified
OS:	Unspecified
Priority:	high
Severity:	medium
Target Milestone:	rc
Target Release:	---
Assignee:	Paolo Bonzini
QA Contact:	FuXiangChun
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:	1497066 1497071
TreeView+	depends on / blocked

Reported:	2017-05-19 10:16 UTC by Xueqiang Wei
Modified:	2018-04-10 14:28 UTC (History)
CC List:	13 users (show)
Fixed In Version:	seabios-1.10.2-5.el7
Doc Type:	If docs needed, set a value
Doc Text:
Clone Of:
Clones:	1497066 1497071 (view as bug list)
Environment:
Last Closed:	2018-04-10 14:26:48 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)
cmd file (51.64 KB, text/plain) 2017-05-19 10:16 UTC, Xueqiang Wei	no flags	Details
View All

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2018:0814	0	None	None	None	2018-04-10 14:28:18 UTC

Description Xueqiang Wei 2017-05-19 10:16:10 UTC

Created attachment 1280366 [details]
cmd file

Description of problem:

can't bootup from image when attached multi-virtio-scsi disks with multi-luns


Version-Release number of selected component (if applicable):
host:
kernel-3.10.0-666.el7.x86_64
qemu-kvm-rhev-2.9.0-5.el7

guest: 
kernel-3.10.0-666.el7.x86_64


How reproducible:
100%


Steps to Reproduce:
1. run test.sh (refer to the attachment)

Actual results:
can't bootup from image


Expected results:
bootup normally


Additional info:
Not hit this issue on RHEL.7.3:
kernel-3.10.0-514.16.1.el7.x86_64
qemu-kvm-rhev-2.6.0-28.el7_3.9

Not hit this issue:
qemu-kvm-rhev-2.9.0-3.el7
qemu-kvm-rhev-2.9.0-4.el7

Comment 2 Karen Noel 2017-05-22 11:33:46 UTC

Please provide qemu-kvm command line used. Thanks.

Comment 3 Fam Zheng 2017-05-22 12:00:03 UTC

Please, attach the boot image as LUN 0. In your command it is pointing to stg0.qcow2.

Comment 4 Xueqiang Wei 2017-06-13 08:53:51 UTC

set lun=0 for boot image also can not bootup normally.

It is seabios issue:
Not hit this issue on below version:
seabios-1.10.2-2.el7.x86_64.rpm
seabios-bin-1.10.2-2.el7.noarch.rpm
seavgabios-bin-1.10.2-2.el7.noarch.rpm


Hit this issue on:
seabios-1.10.2-3.el7.x86_64.rpm
seabios-bin-1.10.2-3.el7.noarch.rpm
seavgabios-bin-1.10.2-3.el7.noarch.rpm

Comment 11 Paolo Bonzini 2017-07-07 14:12:51 UTC

These patches were rejected upstream:
https://www.mail-archive.com/seabios@seabios.org/msg10086.html

The suggestion is to allocate virtqueue info in high memory, which would allow virtio drivers to support more drives.  However, I'm not sure that it would support the full amount used in this testcase (it could still go out of memory).

Comment 12 Paolo Bonzini 2017-09-27 15:01:15 UTC

The upstream maintainer developed an alternative patchset that works with ~900 disks and can be backported easily to RHEL.

Comment 14 Miroslav Rezanina 2017-10-20 10:41:57 UTC

Fix included in seabios-1.10.2-5.el7

Comment 16 FuXiangChun 2017-11-28 09:01:16 UTC

Reproduced this bug with seabios-1.10.2-4.el7.x86_64 & seabios-1.10.2-3.el7.x86_64 & qemu-kvm-rhev-2.10.0-7.el7.x86_64 

steps:

use script test.sh in attachment

result:

can't bootup from image

Verified bug with seabios-1.10.2-7.el7.x86_64 & qemu-kvm-rhev-2.10.0-7.el7.x86_64 

Result:

All disks can be found inside guest. and guest works well

Comment 17 FuXiangChun 2017-11-28 09:03:13 UTC

According to comment16. This bug is fixed. And set this bug as verified.

Comment 20 errata-xmlrpc 2018-04-10 14:26:48 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:0814

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